Equity (Components of Shareholders' Equity) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Balance at December 31:			$ 8,059.1	$ 7,175.7
Net earnings	93.5	237.6	121.2	445.6
Currency translation			(38.9)	(13.1)
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax			1.3	4.8
Pension and OPEB adjustments, net of tax			92.4	48.9
Total comprehensive income (loss)			176.0	486.2
Share-based compensation			31.0	46.5
Acquisition/divestiture of noncontrolling interests			(2.5)	(8.0)
Dividends to noncontrolling interests			(22.9)	(9.4)
Dividends to ordinary shareholders			(101.5)	(67.7)
Accretion of Exchangeable Senior Notes from Temporary Equity			10.0	10.0
Shares issued under incentive plans			107.4	47.5
Repurchase of ordinary shares			(575.6)
Other			(2.3)	(7.3)
Balance at September 30:	7,678.7	7,673.5	7,678.7	7,673.5
Shareholders' Equity [Member]
Balance at December 31:			7,964.3	7,071.8
Net earnings			100.9	430.1
Currency translation			(38.9)	(13.1)
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax			1.3	4.8
Pension and OPEB adjustments, net of tax			92.4	48.9
Total comprehensive income (loss)			155.7	470.7
Share-based compensation			31.0	46.5
Acquisition/divestiture of noncontrolling interests			(1.3)	(5.0)
Dividends to noncontrolling interests			0	0
Dividends to ordinary shareholders			(101.5)	(67.7)
Accretion of Exchangeable Senior Notes from Temporary Equity			10.0	10.0
Shares issued under incentive plans			107.4	47.5
Repurchase of ordinary shares			(575.6)
Other			(0.7)	0
Balance at September 30:	7,589.3	7,573.8	7,589.3	7,573.8
Noncontrolling Interest [Member]
Balance at December 31:			94.8	103.9
Net earnings			20.3	15.5
Currency translation			0	0
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax			0	0
Pension and OPEB adjustments, net of tax			0	0
Total comprehensive income (loss)			20.3	15.5
Share-based compensation			0	0
Acquisition/divestiture of noncontrolling interests			(1.2)	(3.0)
Dividends to noncontrolling interests			(22.9)	(9.4)
Dividends to ordinary shareholders			0	0
Accretion of Exchangeable Senior Notes from Temporary Equity			0	0
Shares issued under incentive plans			0	0
Repurchase of ordinary shares			0
Other			(1.6)	(7.3)
Balance at September 30:	$ 89.4	$ 99.7	$ 89.4	$ 99.7